This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A real estate office handles a 70-unit apartment complex. When the rent is $520 per month, all units are occupied. For each $40 increase in rent, however, an average of one unit becomes vacant. Each occupied unit requires an average of $60 per month for service and repairs. What rent should be charged to obtain a maximum profit?

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